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Test your basic knowledge |
Dairy Cattle And Reproduction
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Subjects
:
industries
,
dairy
Instructions:
Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Start of the reproductive tract for the female. located outside of the body
Dairy Cattle Gestation
Dairy Cattle milking schedule
vulva
growth lost from castration methods (knife & band)
2. Important 'landmark' during palpation
estrous
cervix
Where livelihood is in agriculture
uterus
3. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract
vagina
eminal vesicles
prostate gland
Dairy Cattle Gestation
4. Duct through penis that carries sperm and urine
sperm cell
spermatogenesis
urethra
testis (gonads)
5. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.
uterus
rectal palpation (BSE)
things to check for in a breeding soundness exam (BSE)
6-8 weeks
6. Sperm production
scrotal circumference (BSE)
Grading choice
spermatogenesis
cow estrus cycle
7. (male) pushes the testes upward toward the body for warmth or protection
elastrator
dartos muscle
penis proper
sow estrus
8. Days which have decreasing daylight hours
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9. (switzerland) 2nd in size and milk production - most muscle -
Reasons for gestation length being affected
semen evaluation (BSE)
sow gestation
Brown Swiss Cow
10. Scar tissue plugs up chambers of udder
mare estrus
castration
van deferens
mastitis
11. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.
polyestrous
cryptorchid
penis sizes vs delivering methods
van deferens
12. 265-285 days
castration
polyestrous
Dairy Cattle Gestation
sertoli cells
13. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers
sigmoid flexure
Where livelihood is in agriculture
effects of BST
ewe ovulation
14. Microscopic - make sure not sterile - very few bulls are actually tested
eminal vesicles
seminiferous tubules
cervix
semen evaluation (BSE)
15. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)
Avg. bull specs
estrous
cryptorchid
sow estrus cycle
16. 30 hours after estrus begins
cow ovulation
Sperm survival specs
femininity of a heifer
Bull's fibro-elastic penis
17. (LH) causes female's egg to break (her period)
Dairy Cattle milking schedule
Lutinizing Hormone in females
testis (gonads)
reasons for castration
18. Larger the cow - more milk is produced; smaller the cow - less milk is produced
scrotal circumference (BSE)
dry-off time in dairy cattle
Size of cow in relation to the amount of milk produced
Lutinizing Hormone in males
19. 336 days
feeding a high producing dairy cow
cow gestation
monestrous
mare gestation
20. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %
cow estrus
seasonally polyestrous
Jersey Cow
vagina
21. Front feet and head first. (except for hogs and dogs)
~1 month
normal presentation of the fetus
cremaster muscle
rectal palpation (BSE)
22. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)
Parturition
vulva
accessory sex glands
Lutinizing Hormone in females
23. Implies the amount of estrogen production
Blood
penis proper
femininity of a heifer
sigmoid flexure
24. Male on one pin and female on other side
Blood
Where livelihood is in agriculture
libido test (BSE)
mastitis
25. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).
sow gestation
Follical Stimulating in males
hormones
butterfat
26. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated
cow estrus cycle
burdizzo
semen evaluation (BSE)
Dairy Cattle milking schedule
27. 1. bring in new genes - 2. replace males with leg problems (difficulty breeding) Note: culling has a much greater emphasis in the dairy industry vs the beef industry.
~1 month
Culls bulls earlier (2 reasons)
cow gestation
stag
28. Important 'landmark' during palpation
vagina
Lutinizing Hormone in males
cervix
Grading choice
29. % of fat in milk. makes cheeses and ice cream. regulates cost of milk
butterfat
Where livelihood is in agriculture
accessory sex glands
cervix
30. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)
monestrous
reason for seasonal breeding periods
ewe ovulation
accessory sex glands
31. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)
mare estrus
polyestrous
4 major reasons for culling dairy cows
Dairy calves are removed from cow at birth to...
32. 30-38 hours after estrus cycle begins
normal presentation of the fetus
visual evaluation (BSE)
sow estrus cycle
sow ovulation
33. Milk ~305 days - dry 60 days prior to calving
Dairy Cattle milking schedule
Holstein Cow
prostate gland
estrous
34. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.
Follical Stimulating in males
cow ovulation
pelvis
mare ovulation
35. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg
why does the cow need fat deposits during pregnancy?
sperm cell
mastitis
cervix
36. Milk is 15% ________ and 85% __________.
accessory sex glands
dry matter and water
ewe gestation
oviducts
37. Why Dairy calves are fed powdered milk.
mastitis
Bull's fibro-elastic penis
Blood
1. more cost effective - 2. powdered milk is in excess production
38. (switzerland) 2nd in size and milk production - most muscle -
cremaster muscle
estrous
Brown Swiss Cow
Sperm growth rate
39. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days
cowper's gland
estrous
Dairy calves are removed from cow at birth to...
epididymis: definition - 3 parts - 4 functions
40. Knife-loose ~1wk of growth. band-loose ~2wks of growth.
sertoli cells
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
~1 month
growth lost from castration methods (knife & band)
41. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.
butterfat
Grading choice
retractor muscles
effects of BST
42. Days which have decreasing daylight hours
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43. What makes the milk flow through the mammary glands?
eminal vesicles
Blood
dartos muscle
visual evaluation (BSE)
44. 10-37 (21) days
monestrous
dartos muscle
mare estrus cycle
ewe ovulation
45. Provide nourishment for the developing sperm
Sperm growth rate
Sperm survival specs
sertoli cells
ewe estrus cycle
46. Contains and regulates the temp of the testes for sperm production
cow estrus cycle
scrotum
organs used in spermatogenesis
Mares
47. Milk ~305 days - dry 60 days prior to calving
Dairy Cattle milking schedule
reasons for castration
Where livelihood is in agriculture
accessory sex glands
48. Depository for semen during insemination. where urine leaves the body
ewe estrus
vagina
why does the cow need fat deposits during pregnancy?
mare gestation
49. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm
Follical Stimulating in males
seasonally polyestrous
uterus
prostate gland
50. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.
Dairy Cattle milking schedule
oviducts
monorchid
dry matter and water
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